[TYPO3] xml feed firts line empty and Firefox crashes

[Jason Lefkowitz]

This is definitely not a bug in Firefox.  XML documents that include a 
document type declaration must have that declaration start at the first 
character of the first line of the document.  Any whitespace before that 
means that the document is not "well-formed" and will fail XML 
validation/processing.  While most feed readers make allowances for 
badly formed feeds, it's bad practice to generate feeds that rely on 
readers ignoring the specs.

In other words, when Firefox says that the feed is broken, Firefox is 
correct.  Those feeds ARE broken, and can't be processed as XML.

I ran into exactly this issue in developing my Atom Feed Publisher 
extension (jl_atom), too, so it's not a bug in tt_news.  I have yet to 
find a way to get TYPO3 to let me start my output without the blank line 
being inserted first. Given that tt_news is having the same problem I'm 
inclined to think this is a core TYPO3 issue.

-- Jason Lefkowitz



ries van Twisk wrote:
> I think a quicker solution for this guy is fixing it in TYPO3,
> I am sure more people would of problems with it, are there?
> 
> TYPO3 has fixing bugs on browsers sites already for ages ,
> and an example of this is :
>   config.doctypeSwitch
> Nobody say 'Complain at MS...'.
> 
> -----
> 
> I don't know the specs of RSS at all, but is an empty line allowed at 
> the beginning of the file?
> 
> However, this might sounds like a specific case, otherwise much more 
> people would have complained!!!!
> 
> @Jeroen, are you using latest versions of tt_news?
> and may be you can track down if it's your setup, or that it's really 
> tt_news generating links incorrectly?
> 
> If it's tt_news, then file in a bug report (not at firefox bug track 
> then :) )
> 
> Ries
> 
> On Dec 13, 2007, at 8:04 AM, Dmitry Dulepov [typo3] wrote:
> 
>> Hi!
>>
>> Jeroen Visser wrote:
>>> The RSS feed of my tt_news generates the news.xml but creates the file
>>> with the first line empty and the output starts at line 2.
>>> IE doesn't seem to care about it. Also my feedreader has no problem with
>>> it.
>>> Firefox spits the following message:
>>>
>>> XML Parsing Error: xml declaration not at start of external entity
>>> Location: http://www.mydomain.nl/news.xml
>>> Line Number 2, Column 1:
>>>
>>> <?xml version="1.0" encoding="iso-8859-1" ?>
>>> ^
>>>
>>>
>>> The code that generates the xml realy starts at line 1. Did someone had
>>> this problem also?
>>> I am looking forward to some reactions.
>>
>> Here it is: report it FireFox guys for fixing.
>>
>> -- 
>> Dmitry Dulepov
>> TYPO3 core team
>> Web: http://typo3bloke.net/
>> Skype: callto:liels_bugs
>> "Nothing is impossible. There are only limits to our knowledge"
> 
> -- 
> Ries van Twisk
> Freelance TYPO3 Developer
> email: ries at vantwisk.nl
> web:   http://www.rvantwisk.nl/
> skype: callto://r.vantwisk
> Phone: + 1 810-476-4193
> 
> 
> 
> 
> 
> 
>